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Old   October 14, 2010, 09:38
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hi every body !!!!!!!

i wanna know that how i can calculate turbulent intensity for my case , in fluent !!
i find this relation for fully developed flow in tube I=0.16*(Re(dh))^(-1/8) !!! but my geometry isnt tube !!!! its 3D, in inlet has rectangular cross section, & in outlet a cylinderical Cross section !!!! its alittle complex!!!!!





Plz help me !!!!!!!!!!!!!

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Old   October 15, 2010, 01:24
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Dh is the hydraulic diameter.
Dh = 4.A / P with A = Area and P=perimeter
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Old   October 15, 2010, 09:24
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hi dear !

i know that! but i dont know that can i use this relation for a geometry that isnt a tube!!!!!!!!!! like spiral casing !!!!! if its not possible what is the other relation for calculating turbulent intensity in fluent?????/



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